File for perforated sheets



March 25, 1935. STAAB ET A 1,995,590

FILE FOR PERFORATED SHEETS Filed Nov. 25, 1952 Patented Mar. 26, 1935 vUNITED STATES PATENT OFFICE 1,995,590 FILE FOR PERFORATED SHEETS LudwigStaab and Gisela Staab, Munich, Germany Application November 25, 1932,Serial No. 644,355

In Germany November 30, 1931 f 4 Claims. (Cl. 129-23) We have filedapplication in Germany on which carries the strip fis first opened, thebinder November 30, 1931. element 0, d, e then drawn out of the pile ofsheets,

Various devices have already been made known' the new sheet inserted orthe desired sheet 'refor filing and holding together paper sheets withmoved and the binder element then again placed marginal perforations indocument, pamphlet or in position.

book form. The commonest form of such device Figs. 4 and 5 illustrate aform of execution of consists of a screw spring, which is screwed intothe present invention for filing and holding tothe perforations. Thisdevice has the disadvangether a thick pile of sheets of I any desiredsize tage that the removal and replacement of sheets in the form of abook. The marginal perforais difiicult and time-consuming. The screwtions b may be arranged closer together or fur- 10 spring must also be.prevented from becoming ther apart, according to conditions. The binderloose, for which purpose its ends are bent inelement in this case hasseveral prongs 0, each wards. When removing or filing sheets, it is ofwhich is formed into an open ring d, the intherefore necessary to out01f these ends, so that dividual prongs and rings being connected withthe safeguard is again lost. The sheets must also each other by means ofthe tie bar or bars e. 15 be perforated very narrowly, since only screwThis element can also be made of a single piece springs with a low pitchof thread can be em-' of wire, as shown in Fig. 6, the inner prongs andployed. rings then consisting of a double wire, this in- The presentinvention removes all these disad-- creasing the rigidity of theelement. Further,

vantages by providing awire binder removably atthe two wires of theseinner prongs may be 20 tached to the cover of the file, the prongs ofwhich twisted together, or otherwise connected, for inform rings partlyopen and connected by a transstance, by steeping in a metal bath, or bysolderverse bar. ing and the like, Or again, the same end may Theaccompanying drawing shows different be attained by arranging severaltwo-prong ele- 5 fornis of execution of the resent invention. mentsaccording to Figs. 1 to 3 beside each other Figure 1 illustrates aperspective view showing and fastening them together by suitable means.one form of the invention; In the form of execution according to Figs. 4Figure 2 illustrates a side elevation of the and 5 a pocket his providedon the cover 9 of the wire used in this form; file or book, into whichpocket the prongs 0 may 3 Figure 3 illustrates a plan view of such wire;be pushed and thus held in position.

Figure 4 illustrates a face view of an open book Fig. 7 is a view of theback of the book or file, showing a slight modification of theinvention; which is enclosed by therings d. A pin or wire Figure 5illustrates a top view of Figure 4 i may pass through the rings d andhave its ends Figure 6 illustrates a perspective view of the riveted orotherwise suitably secured to a book 5 wire employed inthismodification; cover g so that the rings are held from detach- Figure7 illustrates a perspective view showing ment from the back. a number ofleaves held by the modified wire; Fig. 8 shows another form of the meansfor Figure 8 illustrates a face view of an open book locking the binderelement in position; this conembodying a third form of the invention;sists of a spring fork is fastened to the file cover Figure 9illustrates a face view of an open book 9, the ends of whi h k n a w tht rin s 4 embodying a fourth form thereof; and d of the binder element.In the case of heavy Figure 10 is an end view of the device shown inbooks, the locking position of the entire binder Figure 1. element maybe attained by means of a piece of Figs. 1, 2 and 3 show one form ofexecution of cardboard, metal or other suitable material i1- the presentinvention, in which a are loose sheets dented along one side, as shownin Fig. 9. Tlis with the perforations b. The filing device in thisindented piece I is also pushed into the pocket case consists of abinder element of wire or other 71. of the file cover above prongs c andengages suitable material with two prongs c of suitable with the ringsd, thus holding themin position. length, which are formed into rings dat the What we claim as our invention, is:

5 base of the element and connected by the tie or 1. A loose leaf binderincluding a wire binder 5 bar e, The prongs c are removably attached toformed of a single piece of wire having a pair of the cover g of thefile, for instance, by means of substantially parallel open ring membershaving a strip of suitable material f held to the cover by correspondingends connected by a straight tie releasable clips I such as ordinarypaper fasportion perpendicular to the planes of the rings,

teners. To insert or remove a sheet, the sheet the remaining ends ofsaid rings being extended 55 tial portions each lying substantially inthe plane of a respective ring, the two ends of each of said rings beingspaced circumferentially from each other to leave a gap between saidends.

2. A loose leaf binder including a wire binderformed of a single pieceof wire having a plurality of pairs of parallel open ringmembers, thering members of each pair having corresponding ends connected by astraight'tie portion perpendicular to the planes of the rings, said tieportions being longitudinally alined with each other, the ren lainingends of the rings'being extended in par allelism to each other andforming tangential portions each lying in the plane of a respectivering, the tangential portions of the adjacent rings of the pairs, beingconnected together by bends in the wire to form' a continuous wirestructure.

3.-A loose leaf binder including a wire binder formed of a single pieceof wire having a pair-of substantially parallel open ring members havingcorresponding ends connected by a straight tie portion perpendicular tothe planes of the rings,

the remaining ends of said rings being extended in parallelism to eachother and forming tangential portions each lying substantially in theplane of a respective ring; in combination with a file cover having apocket wherein said tangential portionsengage.

4. A loose leaf binder including a wire binder formed of a single pieceof wire having a plurality of pairsof parallel open ring members, thering members of, each pair having corresponding ends connected by astraight 'tie portion perpendicular to the planes of the rings, said tieportions being longitudinally alined with each other,

the remaining ends of the rings being extended in parallelism to eachother and forming tangential portions each lying in the plane of arespective ring, the tangential portions of the adjacent rings of thepairs being connected together by bends in the wire to form a continuouswire structure; in combination with a file cover having a pocket whereinsaid tangential portions engage.

LUDWIG STAAB.- GISELA STAAB.

